Il mondo in italiano : annuario 2006 / 
Societa ̀Dante Alighieri ; a cura di Paolo Peluffo e Luca Serianni ; testi di Agostini, [et al.]. 
 - [S.l.] :  www.ladante.it,  2006. 
 - VII, 509, [3]  p. ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Italian language--Study and teaching--Foreign speakers.<br/>Italian language--20th century.<br/>Italian language--Foreign countries.
<br/><br/><label>LC Class. No.: </label>PC1910  / .S6 1975